AERATOR TYPE ATTACHMENT STRUCTURE

• US 3,739,856 A
• Filed: 12/09/1971
• Issued: 06/19/1973
• Est. Priority Date: 12/09/1971
• Status: Expired due to Term

• Current Assignee: Charles A. Ray
• Original Assignee: Charles A. Ray
• Inventors: Ray, Charles A.
• Primary Examiner(s): Pulfrey, Robert E.
• Assistant Examiner(s): Elckholt, Eugene H.
• Application Number:
  US05/206,302
• Time in Patent Office: 558 Days
• Field of Search: 56/256 172/21,22,42,60,118,119-120,123,536,532,765,766 37/43R,43E
• US Class Current: 172/21
• CPC Class Codes: A01B 33/028 of the walk-behind type walk-type tractors B62D51/04
• CPC Class Codes: A01B 45/026 Scarifiers comprising a knife reel actively driven around a substantially horizontal shaft
• CPC Class Codes: B62D 51/06 Uniaxle walk-type tractors

Abstract

This invention is an aerator type attachment structure which may be connected to a power means such as a garden tractor having a pair of aerator assemblies rotatable on contact with the area being worked. More particularly, each of the aerator assemblies are composed of a main support shaft having a plurality of spaced and angularly positioned parallel plate members thereupon, each plate member of a square shape to engage the earth for aerating and support purposes on rotation of the support shaft. Each aerator assembly includes an adjustable depth control assembly to adjust the depth of the blade working with the supporting earth.

Claims

1. An aerator structure adapted to be attached to the power takeoff means of a garden tractor or the like, comprising:

a. an aerator assembly having a plurality of spaced plate members secured to an elongated support shaft so as to extend perpendicular to the axis of said support shaft, b. said plate members each having more than one corner areas thereon, c. means for connecting said support shaft to said power takeoff of the garden tractor, d. said plate members being secured in a spiral manner to said support shaft so that on rotation of said support shaft in one direction said corner areas of said plate members contact the support surface in an outward directional spiral, e. said plate members each having a plurality of said corner areas to contact the support surface being worked upon in a spiraling action, each of said corner areas forming an apex of 90* to form a blunt, non cutting form of said corner areas, and f. said plate members each having said corner areas hardened so as to contact and pull grass in the support surface being aerated without cutting the same.

2. An aerator structure as described in claim 1, wherein:

a. said aerator assembly having more than one identical set in spaced rotation of said plate members secured to said support shaft, and b. each of said sets of said plate members having a corner area contacting the support surface in the outward direction spiral and contacting the support surface in a continuous sprial directed outwardly in each of said set of said plate members.

3. An aerator structure as described in claim 1, wherein:

a. said corner areas contacting the support surface on a continuous, outwardly spiraling movement relative to the center of said support shaft.